evidence, despite the fact the british seemed like they were not going to take any action on this. how close to certainty can they get in weeks after an attack? >> well, it is great to be here, intelligence is never 100% certain, right? in many ways, you're trying to put together a picture of a lot of different things, you have human intelligence, signal intelligence, phone calls or other communications by the leadership. you're also talking to ngos, troops on the ground, to witness things. potentially doctors, also watching forces in the media. this is a case where unlike ten years ago, where we were trying to figure out what was saddam hiding, what were his secrets? here, we're actually talking about what is open and available for things to observe. if somebody wants to make the case that this is a fraud, this is a hoax, perpetrated by someone other than the regime, i would like to hear that.